Air conditioner



FIG. 1 is a bottom and side perspective view of an air conditioner showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a elevational view thereof, the rear being a mirror image of that shown; and,

FIG. 5 is a side elevational view thereof, the side opposite being a mirror image of that shown.

The broken-line disclosure in the views is understood to be the unclaimed portion of the air conditioner in which the claimed design is embodied, but which forms no part of the claimed design. 

The ornamental design for an air conditioner, as shown and described. 